Ultrasonic cleaning is a modern, safe and efficient process to obtain a deep cleaning guarantee in the shortest possible time. The advantages consist in a perfect cleaning of the components even with dirt, encrustations and more tenacious contaminants and arranged in cavities difficult to reach manually.
Ultrasounds? what are they?
Ultrasounds are vibrations of a material medium similar to acoustic waves, but with frequencies that are too high to be heard by the human ear. The frequency limit of human hearing varies from about 10Khz to about 18Khz. The audible frequency limit decreases with increasing age.
In particular, the ultrasonic washing machine operates at a frequency of 45Khz, that is at a frequency very far from the audible one. The apparatus is composed of an ultrasonic generator and several piezoelectric transducers which are applied to the external bottom of a stainless steel tank containing the washing liquid. The electronic generator produces a continuous signal at a frequency of 45 Khz, driving the piezoelectric transducers which transform the signal into a mechanical vibration. This vibrational energy is transmitted to the liquid of the tank at the frequency of 45,000 oscillations per second. These oscillations of pressure and depression create an enormous quantity of micro-bubbles inside the liquid which, imploding in very rapid succession, create enormous impact energies between the detergent liquid and the surface to be cleaned. This phenomenon is called “cavitation”. This phenomenon allows an efficient and safe cleaning system, reducing time.
The washing machine with Sweep System technology contains the best that can be requested from an ultrasonic washing machine. In fact, the brand new generator incorporates a special ultrasonic oscillator with Sweep System technology. With this technology, the output frequency of the ultrasound generator is modulated around a central frequency, so the transducers working at the frequency of 40 Khz are modulated with a frequency between 39 khz and 41 Khz.
This frequency offers the following advantages:
– reduces washing times
– prevents damage to delicate parts to be cleaned
– reduces the effects of stationary waves by increasing the ultrasonic energy distribution of the washing liquid
– improves cleaning results and facilitates cavitation in liquids that are difficult to cavitate with traditional ultrasonic systems.